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https://github.com/brain-hackers/u-boot-brain
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cc2d27dcdc
With FSP2 we use MTRRs in U-Boot proper even though the 32-bit init happens in TPL. Enable this, using a variable to try to make the conditions more palatable. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
35 lines
655 B
C
35 lines
655 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2011
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* Graeme Russ, <graeme.russ@gmail.com>
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*/
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#include <common.h>
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#include <linux/errno.h>
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#include <asm/mtrr.h>
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DECLARE_GLOBAL_DATA_PTR;
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int init_cache_f_r(void)
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{
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bool do_mtrr = CONFIG_IS_ENABLED(X86_32BIT_INIT) ||
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IS_ENABLED(CONFIG_FSP_VERSION2);
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int ret;
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do_mtrr &= !IS_ENABLED(CONFIG_FSP_VERSION1) &&
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!IS_ENABLED(CONFIG_SYS_SLIMBOOTLOADER);
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if (do_mtrr) {
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ret = mtrr_commit(false);
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/*
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* If MTRR MSR is not implemented by the processor, just ignore
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* it
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*/
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if (ret && ret != -ENOSYS)
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return ret;
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}
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/* Initialise the CPU cache(s) */
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return init_cache();
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}
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